Estimated number of annual visits to protected areas by country. Data: Balmford A, Green JMH, Anderson M, Beresford J, Huang C, Naidoo R, et al. (2015) Walk on the Wild Side: Estimating the Global Magnitude of Visits to Protected Areas. PLoS Biol 13(2): e1002074. doi:10.1371/journal.pbio.1002074
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